President Trump has indicated that the U.S. was given prior warning of the Iranian strike. U.S. and Qatari authorities said the missiles were intercepted.

About 10,000 troops are stationed at the base, which serves as the regional headquarters for the U.S. Central Command.

Iran retaliated Monday for the U.S. attacks on its nuclear sites by targeting Al Udeid Air Base, a sprawling desert facility in Qatar that serves as a main regional military hub for American forces. President Donald Trump said in a social media post that no Americans were harmed and “hardly any damage was done.